- #1
k31453
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Homework Statement
Hi i got this question ?
have to find Vr and VL
so can i use this formula :
VR = IR
VL = I * XL?
confuse ?? need help ??
am i on right track?
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ehild said:Impedance is used for AC circuits, when the current and voltage have sinusoidal time dependence. Here the time dependence of the current is different from a sine function. Go back to the definition of the voltage across a capacitor (in terms of charge) and inductor (in terms of derivative of current).
ehild
k31453 said:so answer is 0.002 * (20/1) = 0.04 for Vl
right?
ehild said:? You have to show the time dependence of voltages. The answer is not a number.
ehild
ehild said:I try to help and I am not kidding. Read the problem text, please.
ehild
ehild said:You sent the plot of voltage across the resistor. The shape is correct, but watch out the magnitude. The current is given in A (ampers) The resistance is 2Ω. What is the maximum voltage across the resistor?
What about the inductor?
ehild
k31453 said:Got it right?
k31453 said:so answer is 0.002 * (20/1) = 0.04 for Vl
right?
technician said:I agree with you. If the graph is current against time then this is the voltage across the inductor for the first part of the graph AND the last part of the graph. This voltage will be constant over these time intervals.
For the middle part it will be -0.04V.
For the flat bits of the graph there is no change of current with time...what will the voltage across the inductor be ??
technician said:It looks to me like 20A in 1ms ...
ehild said:The current changes 2 A in 1 ms,( Edit:20 A in 1 ms) so the voltage on the inductor is not 0.04 V.
ehild
k31453 said:so it will be this graph right because di/dt is derivitve !
ehild said:Excellent! Good solution, nice picture. (Only the unit V is missing from the vertical axis.)
ehild
ehild said:Go to post #13
ehild
ehild said:The flat part has zero gradient so zero induced voltages.
ehild
A Confusion RLC circuit is a type of electrical circuit that consists of three components - a resistor (R), an inductor (L), and a capacitor (C). These components are connected in series and can create a variety of complex behaviors and responses depending on their values and the applied voltage or current.
In a Confusion RLC circuit, the resistor limits the flow of current, the inductor stores energy in the form of a magnetic field, and the capacitor stores energy in the form of an electric field. When an alternating current (AC) is applied to the circuit, the inductor and capacitor can interact and create oscillations, resulting in a variety of behaviors such as resonance, filtering, and frequency-dependent responses.
The main difference between a Confusion RLC circuit and a regular RLC circuit is that the values of the components (resistor, inductor, and capacitor) in a Confusion RLC circuit are not fixed and can vary, leading to more complex behaviors and responses. In a regular RLC circuit, the values of the components are typically fixed and chosen for specific purposes.
Confusion RLC circuits have a wide range of applications, including in electronic filters, oscillators, and frequency-selective networks. They are also commonly used in radio frequency (RF) circuits, audio amplifiers, and power supplies. In addition, Confusion RLC circuits are essential in the design of electronic devices such as radios, televisions, and computers.
The behavior of a Confusion RLC circuit can be calculated using various mathematical techniques, depending on the specific circuit configuration and desired response. One common approach is to use differential equations to model the circuit and then solve them using techniques such as Laplace transforms or circuit analysis software. It is also important to understand the fundamentals of RLC circuits and how the values of the components affect the behavior of the circuit.